To install VirtualBox’s guest additions, start your virtual machine and log in to your guest operating system. Then, click on the Devices menu on the VirtualBox window and select “Insert Guest ...

The VirtualBox Guest Additions gives a performance boost and extra features to your hosts. Follow these steps to install this package on a GUI-less Ubuntu server guest.

How you install the Guest Additions will depend upon what operating system is running the Guest, and if you’re using VirtualBox with a GUI desktop or a console-only server.

Each Linux system will be slightly different, but the Tombuntu blog's instructions for installing VirtualBox Guest Additions in Ubuntu hold mostly true: head to where the ISO is mounted as a CD ...